baber/WOPTO huggingface dataset:
Patent GB-1390988-A (GB)
Title: Method of making audio amplification apparatus for an aurally handicapped person
IPC: H04R25/00
Filed: 1972-03-30
Abstract: 1390988 Sound producing devices SHALAKO INTERNATIONAL Inc 30 March 1972 [12 April 1971] 15179/72 Heading G5J [Also in Division H4] A method of making a deaf aid for a partially deaf individual comprises determining the individual's threshold frequency response, determining the individual's comfort level frequency response, measuring the sound intensity difference between the threshold response and the comfort level response and adjusting the frequency response of the deaf aid to conform to the individual's own comfort loudness contour but modified to provide less amplification at frequencies at which the difference falls below a predetermined minimum difference (e.g. 5 db.), with respect to the amplification provided at frequencies at which said predetermined minimum difference is exceeded. A pink or white noise generator 1 (Fig. 1), is coupled to a 1/3 octave filter set 2 covering the range 100 Hz to 10 kHz. Each filter 3 is adjustable through Œ20 db. The output is applied through a broadband amplifier 4 and loudspeaker 5 at an intensity determined by a volume control 9. The deaf individual 6 and a microphone 7 receive the sound output. The sensitivity (threshold) curve (Fig. 3), is ascertained by utilizing each filter 3 in turn and setting the gain control 9 until the individual first hears the sound. The comfort level curve is determined by adjusting each filter 3 in turn for maximum signal and advancing the gain control until distinct discomfort is indicated, after which the gain control 9 is gradually decreased until the individual indicates the sound no longer intolerably loud. An audio level meter 9 is observed during each test and the full line curves shown in Fig. 3 are plotted using it. A deaf aid is then provided having parallel filters (13), Fig. 2 (not shown), first set to the values indicated by the comfort level curve. The filters (13) are then reset to boost the response approximately 5 db. below the individual's resonance point (Fig. 4), or an equivalent result is achieved more easily by attenuating the deaf aid response at the individual's resonance response. At any points where the difference between the sensitivity curve and comfort level curve is small (e.g. 5 db. or less), the deaf aid is attenuated.
Patent GB-642082-A (GB)
Title: An electric arc-welding device
Inventor: BROWN JACK KEYES
IPC: B23K9/067
Filed: 1944-08-10
Abstract: 642,082. Uniting by fusion. ENGLISH ELECTRIC CO., Ltd. Aug. 10, 1944, No. 15236. [Class 83 (iv)] In an arc welding apparatus in which the electrode is carried by a holder mounted in a traveller advanced by an electromotor along a bar arranged in an attitude inclined to a required linear weld so as to feed the electrode to the arc, as it progresses along the welding line, the electrode being maintained in an attitude inclined to the bar, means are provided to vary the energization of the motor in accordance with an electrical condition of the arc to maintain stability of the welding conditions. A triangular bar 1 which is erected in an attitude inclined to a linear weld and preferably in a vertical plane containing the weld, is provided with a rack 1a meshing with a worm 14 on a shaft 13 mounted in a bearing member 10 pivotally mounted about an axis 8 in lugs 2h, 2k on a traveller 2 which slides along the bar. The shaft is driven through reduction gear 12 from a motor 11 carried by the member 10, which may be unlatched from the traveller so that the worm may be withdrawn from the rack when positioning the traveller before welding. The-traveller is provided with a guide roller 5 and a channel 2a and balls 4 for guiding a member 3 which has at its ends hooked plates 3c to receive the insulated pivot bolts 21 of an angularly adjustable block 20 in which the electrode is secured by a set screw. The electrode may be reciprocated across the weld by a cam 15 on the shaft 13 which engages a lever 6 pivoted at 7 in one of a number of holes 2c, 2e in the traveller and slotted to engage a pin 3d on the member 3. The motor 11 is series wound and is driven by alternating current so that if the arc lengthens the voltage rises and the motor speeds up and if it shortens the voltage falls and the motor slows up. The circuit contains a regulating resistance. The electrode may have a fusible tip for starting the arc or a small fusible element may be inserted between the electrode and work. According to the Provisional Specification teeth may be provided on more than one edge of the bar, and the bar may be angularly adjusted and clamped as described in Specification 642,081, [Group X]. The member 10 may be held in position by a spring toggle latch and may be pressed out by a spring on release of the latch. The traveller may have bearings for forked arms provided with pointers for indicating the positions of the ends of the electrode when setting up.
Patent GB-1132395-A (GB)
Title: Monochromator
IPC: G01J3/12
Filed: 1966-04-06
Abstract: 1,132,395. Monochromators. BECKMAN INSTRUMENTS Inc. April 6, 1966 [April 29, 1965(2)], No.15245/66. Heading G2J. A monochromator for passing selected wavelengths, comprises an interference filter, a variable slit-defining means positioned adjacent the filter and displaceable relative thereto, and means for varying the opening of the slit-defining means as a function of wavelength transmitted by the sector of the filter bounded by the slit-defining means. As shown in Fig. 1, an annular interference filter is divided into four sectors 13-16 and is mounted coaxially on a rotatable support wheel 11. The slit-defining means comprises a pair of jaws 24, 25 carried at the ends of a U- shaped spring 27 which is anchored between the shaft 18 of the wheel and a guide block 28. An actuator 30 having two extending arms 33, 34 is slidably mounted in the guide block 28 and urged upwards (as shown in Fig.1) by a spring 44. The free ends of the arms 33, 34 are bifurcated and engage the jaws 24, 25 respectively so that sliding movement of the actuator 30 moves the jaws 24, 25 towards or away from each other. Downward movement of the actuator against the action of the spring 44 is effected by a cam 39 carried by the wheel 11 and engaging a pin 42 on the actuator, this pin 42 also serving to anchor the spring 44. The filter sectors each have a wavelength transmission characteristic which is a linear function of the angular position of the filter. A second embodiment Fig. 5 (not shown) is fully disclosed in Specification 1,132, 394.
Patent GB-380033-A (GB)
Title: Improvements in devices for lighting streets
IPC: F21S8/08
Filed: 1932-05-30
Abstract: 380,033. Street lamps. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN, 13D, Emmasingel, Eindhoven, Holland. May 30, 1932, No. 15295. Convention date, June 5, 1931. [Class 75 (iv).] Light reflected by trough-shaped reflectors ; lighting, systems of.-A street lamp comprises a linear light source so disposed with respect to a vertically arranged reflector as to avoid dazzling the driver of an oncoming vehicle. The light source may comprise a number of electric lamp bulbs in line with each other, a tubular bulb with a straight filament, or a neon, krypton, or sodium discharge tube. In the form shown in Fig. 3, the light source 3 is disposed in a recess in a Z-iron 5 carrying oppositely disposed cylindrical reflectors 2A, 2B and opal glass diffusing partitions 4. The lamps are arranged as shown in Fig. 4 so that the reflectors 2A project beams q substantially in the traffic directions p along the roadway P, whilst the reflectors 2B project beams ql in the opposite directions across the footpaths R, S.
Patent GB-375959-A (GB)
Title: An improved construction of backrest
IPC: A47C1/16
Filed: 1931-05-26
Abstract: 375,959. Back-rests. STATTERS, A. W., Clenair, Carr's Bank, Dunston-on- Tyne. May 26, 1931, No. 15403. [Class 52 (ii).] A foldable back-rest attachment for a chair comprises two separate pairs of rods 1, 2 so joined together that the rods of one pair may be folded one against the other independently of the rods of the other pair, the two pairs being formed with means, such as 7, 9, whereby they can be independently affixed to a backless seat, and a back supporting member 10 connected across said rods, the arrangement being such that, when removed from the seat, all of the rods can be laid close together to provide a compact bundle. In the drawings the rods 1, 2 are shown either hinged together as at 4, or having a spigot and socket connection 12, 16. According to the Provisional Specification the device may be permanently affixed to the seat, as by screws passed through the members 9.
Patent GB-1379494-A (GB)
Title: Television receiver circuits
IPC: H04N3/227
Filed: 1972-04-04
Abstract: 1379494 Cathode-ray tube circuits BLAUPUNKT-WERKE GmbH 4 April 1972 [3 April 1971] 15461/72 Heading H4T Mis-centering of the raster on a television picture tube due to manufacturing or other tolerances in the deflection system or in the tube is corrected by means of an adjustable direct current source 15 connected in series with the primary winding 10 of the line fly back transformer 11 and the horizontal deflection coils 9. The (simplified) horizontal deflection circuit is stated to operate by capacitors 4 and 5 charging through a charging inductor 2 and a further inductor 3 from a regulated mains supply 1 when during line scan periods, switch 6 is closed and switch 7 is open. The secondary winding 12 of the fly back transformer 11 supplies EHT via a voltage multiplier 13.
Patent GB-1143151-A (GB)
Title: Improvements in or relating to brake cylinders for rail vehicles
IPC: F16D65/28
Filed: 1967-04-04
Abstract: 1,143,151. Brake linkages. KNORRBREMSE G.m.b.H. 4 April, 1967 [4 April, 1966], No. 15479/67. Heading F2E. A rail vehicle brake cylinder includes a piston having a piston-rod 11, Fig. 1, the projecting end of the piston-rod being formed with grooves 11<SP>1</SP>, 11<SP>11</SP> which are engaged by a generally U- shaped coupling member 38 to engage the rod end with a rod head 12 for articulation to a break linkage. A split pin engages the free ends of the coupling member arms to secure it in position.
Patent GB-804687-A (GB)
Title: Improved closure cap for a fuel tank
Inventor: JESSOP GERALD ARTHUR
IPC: B65D51/16
Filed: 1957-05-16
Abstract: 804,687. Closure caps. WILSON GAS METERS Ltd., G. May 16, 1957, No.15573/57. Class 125(3). A fuel tank closure cap 14 of keroseneresistant rubber has an interned rounded flange 17 to engage the lip 12 of the filling neck 11, an upper flange 15 and a vent hole 18.
Patent GB-1489530-A (GB)
Title: Method of manufacturing an electrical connector
IPC: H01R12/18
Filed: 1976-04-20
Abstract: 1489530 Manufacturing electrical connectors AMP Inc 20 April 1976 [5 May 1975] 15829/76 Heading H2E An electrical connector comprising a housing, and an electrical contact having a first part 18 lying on a substantially planar surface 2 of the housing, a second part 19 received in a slot 7 of the housing, and a third part 20 projecting from the slot 7 in a direction away from the housing, is manufactured by arranging the contact on a first housing part 1 providing surface 2 and part of the periphery of the slot 7, and bonding, e.g. by ultrasonic welding, a second housing part 9 thereto so as to complete the slot 7 and secure the contact to the housing. As described, two rows of contacts are arranged on respective planar surfaces 2, projections 8 being provided which engage in respective recesses 11 in second parts 9. One of the two parts 9 is provided with a projection 16 on a boss 15. During bonding, projections 8 and 16 become liquid and serve to bond the parts 1, 9 together. Each contact has a projection 21 which engages portion 6. The parts 20 of the contacts may be for contacting an edge of a printed circuit board, an apertured lug 14 on parts 9 for receiving a bolt being provided to mount the housing on the printed circuit board. The lugs 14 may be replaced by a clamp part so that contact parts 20 may be clamped to a flat flexible cable. The contacts are tensioned during bonding so that the free end at least of contact part 18 is maintained in contact with planar surface 2, the contact parts 18 being formed as a plug for insertion into a printed circuit board edge connector. Each contact part 20 may be provided with a slot which serves as a solder reservoir to facilitate soldering of the contact parts 20 to the conductive strips of a printed circuit board.
Patent GB-168439-A (GB)
Title: Improvements in gas saving devices used in connection with gas cookers
IPC: F24C15/10
Filed: 1920-06-11
Abstract: 168,439. Lee, F. J. R. June 11, 1920. Heat distributors. - A heat distributor for use on gas-stove hotplates of the type comprising a shallow box partially open on the lower side and having openings in the a top for cooking-vessels is supported so that the top is substantially level with the top of the hot-plate. In the form shown this is provided for by means of slots or holes a', a in the ends through which the bars b pass; in modifications the device is supported by bars passing under or around it or by a flange or ears resting on the stove top, or by a combination of these. The top of the device, or a portion d<1> of the top, may be removable when only one vessel is to be heated, or for purposes of renewal, and flanges g protecting the outer sides from extreme heat may be provided on it. The bottom h may also be removablefor use on stoves where a second burner is so placed as to project into the device.
Patent GB-291406-A (GB)
Title: Improvements relating to voltage limiting arrangements
IPC: H03G11/00
Filed: 1928-05-30
Abstract: 291,406. British Thomson-Houston Co., Ltd., (Assignees of Kendall, J. M.). June 1, 1927, [Convention date]. Void [Published under Sect. 91 of fhe Acts]. Converting pulsating currents into steady continuous currents.-The high-tension supply to the plate of the amplifier 6 of a wireless receiver is derived from the mains 4 through a smoothing system comprising condensers 8, and the field winding 3 of the loud-speaker 1.
Patent GB-1361712-A (GB)
Title: Filtration apparatus
IPC: B01D33/00
Filed: 1972-04-06
Abstract: 1361712 Centrifugal separators; centrifugal filter ADVANCED PRODUCT ENG CORP 6 April 1972 15898/72 Headings BID BIT and B2P  An apparatus for removing, e.g. solid or liquid particles from a fluid, e.g. gas or liquid, comprises a stationary housing 11, Fig. 1, an inlet 10 for introducing particles-laden fluid into the housing, a shaft 14 supported by the housing, a rotatable, cylindrically-shaped filter 17 supoprted by the shaft, means 13 for rotating the shaft, a compressor positioned within the housing between the inlet and the filter for producing a positive fluid flow through the apparatus and swirling of the fluid between the housing and the filter, a stationary outlet 12 for the filtered fluid, expander means 25 positioned within the housing between the filter and the outlet for extracting energy remaining in the filtered fluid, the compressor and the expander means both including a plurality of vanes 23 and 25a respectively arranged about the shaft 14, the outlet 12 being located downstream of the inlet 10, the expander vanes 25a being located downstream of the compressor vanes 23, and the expander vanes being spaced inwardly from the outer periphery of the compressor vanes. The apparatus may be installed with its shaft vertical or horizontal. The filter 17 comprises a frame 17a which supports a layer 18 of polyurethane foam or asbestos fibre surrounded by a metallic screen 19. The filter is secured to a plate 15 coupled to the shaft 14 and carrying a core 16 which deflects the filtered fluid towards the expander 25 and the outlet 12 which comprises one or more outlet ports. A core 20 is supported by the frame 17a-to rotate therewith. The compressor vanes 23 are bolted to the plate 15 and are provided with adjustable bent extensions 24, Fig. 3, which produce pre-swirling or counter-swirling of the fluid forced by the vanes in the space 30 whereby large particles are separated by centrifugal force against the core 20 which deflects the fluid and small particles on to the filter 17. The large particles fall to the bottom of the housing 11 and are removed at 21. Alternatively, the core 20 may be dispensed with and the large particles are thrown against the wall of the housing. The expander means 25 is in the form of a turbine with its vanes 25a secured to the top of the core 16. A cylindrical deflector 26 secured to the turbine directs the filtered fluid towards the outlet 12. In the construction of Fig. 5, two filters 40, 41 are arranged preferably in parallel. A guide member 42 secured to the top of the turbine vanes 25a directs the flow of filtered fluid out to the outlet 12. A scrubbing action of the fluid (e.g. gas) may be effected by fluid (e.g. water) fed by a pump 45 from a reservoir 46 through piping 47 opening into the interior of the housing. In a modification, the inner filter 40 and the inner core may be removed and the apparatus will function as in Fig. 1 with additional scrubbing action. Uses of the apparatus are given.
Patent GB-1115886-A (GB)
Title: Plant morphology regulating compositions and substituted fluorenes for use therein
IPC: C07C203/08
Filed: 1966-04-12
Abstract: Plants are treated with a 9-cyano-fluorene or fluorenyl-9-nitrate compound of the formula <FORM:1115886/C1/1> wherein R1 and R2 are H or halogen, R3 is CN or ONO2, R4 is H, OH, CH2OR6 or CO2R6, R5 is H or CO2R6, and R6 is H or C1-4 alkyl.  A treating composition may be in the form of a powder (together with a solid filler), solution, or emulsion.  Other plant-growth regulants may be present. missing page 188ALSO:The invention comprises fluorine derivatives of formula <FORM:1115886/C2/1> wherein R1 and R2 are -H or halogen, R3 i -CN or -ONO2, R4 is -H, -OH, -CH2OR6 or -COOR6, R5 is -H or COOR6, and R6 is -H or C1- 4 alkyl, excluding 9-cyanofluorene, and fluorene-9-cyanhydrin carboxylic acid-(1)-ethyl ester and provided that (1) when R3 is -CN and R4 is OH simultaneously, R5 is -COOR6 and (2) when R3 is -ONO2 R4 is not -OH.  The compounds may be prepared by introduction of a cyanide group by dehydration of the corresponding 9-carboxamide or by reaction of the corresponding 9-halo-derivative with HCN or a metal cyanide; by introduction of a nitrate group by reaction of the corresponding 9-chloroderivatives with silver nitrate; by introduction of a cyanhydrin group by reaction of the corresponding fluorence with HCN or metal cyanides; by introduction of the group -CH2OH at R4 by reaction of the corresponding compounds in which R4 is -H, with formaldehyde or agents which yield formaldehyde; by introduction of halogen atoms at R1 and/or R2 by reaction of the corresponding unsubstituted compounds with a halogen; or by esterifying or etherifying compounds in which R6 is hydrogen using conventional techniques.ALSO:Plant morphology regulating compositions comprise one or more compounds of formula: <FORM:1115886/A5-A6/1> wherein R1 and R2 are -H or halogen, R3 is -CN or -ONO2, R4 is -H, -OH, -CH2OR6 or -COOR6, R5 is -H or -COOR6 and R6 is -H or C1-4 alkyl provided that (i) when R1 and R2 are H and R3 is CN, R4 and R5 are neither both H nor is R4 OH and R5 -COOC2H5 simultaneously, (ii) when R3 is -CN and R4 is OH sumiltaneously R5 is COOR6, and (iii) when R3 is ONO2 R4 is not OH, and one more liquid or solid non phytotoxic diluents if desired in combination with one or more specified herbicidal and/or growth regulators.  Numerous herbicidal substances are specified and specified additives and fillers may also be incorporated.
Patent GB-810323-A (GB)
Title: Improvements relating to aluminium alcoholate derivatives
Inventor: KEMP STANLEY GORDON
IPC: C07F5/06
Filed: 1956-05-23
Abstract: Polymeric amino-alkylates having recurring units of the formul <FORM:0810323/IV (a)/1> and <FORM:0810323/IV (a)/2> where R and R1 represent alkyl and alkylene radicals respectively, are prepared by reacting (preferably by heating to temperatures up to 175 DEG  C.) an aluminium alcoholate with an appropriate amount of an alkanolamine and removing the alcohol formed by distillation.  In examples aluminium isopropylate is reacted with an equimolecular proportion of diethanolamine to give a polymer having recurring units of the formula -Al(OPr).OC2H4.NH.C2H4O-aluminium isopropylate is reacted with 1 1/2 molecular equivalents of diethanolamine to give a polymer having recurring units of the formula <FORM:0810323/IV (a)/3> and aluminium isopropylate is reacted with 2/3 mol. of triethanolamine to give a polymer having recurring units of the formula <FORM:0810323/IV (a)/4> (also containing some free -N-C2H4OH groups), wherein Pr represents the isopropyl radical.  The above products and products of the formul  Al(OR)2(OR1NH2), Al(OR)(OR1 NH2)2, (RO)2.Al.OR1.NH.R1O.Al.(OR)2 and <FORM:0810323/IV (a)/5> where R and R1 are alkyl and alkylene radicals respectively, and Al(OPr)2(OC2H4NH2), Al (OPr)(OC2H4NH2)2, Al(OC2H4NH2)3, (PrO)2. AlOC2H4.NH.C2H4O.Al(OPr)2 and <FORM:0810323/IV (a)/6> where Pr represents the isopropyl radical, are used as curing agents for epoxy resins.ALSO:The invention comprises (1) aluminium amino-alkylates of the formul  Al(OR)2(OR1NH2), Al(OR)(OR1NH2)2, (RO)2.Al.OR1.NH.R1O.Al.(OR)2 and <FORM:0810323/IV (b)/1> where R and R1 represent alkyl and alkylene radicals respectively; (2) polymeric aminoalkylates having recurring units of the formul -Al(OR).OR1.NH.R1O-, <FORM:0810323/IV (b)/2> and <FORM:0810323/IV (b)/3> where R and R1 represent alkyl and alkylene radicals respectively; and (3) the preparation of aluminium amino-alkylates (i.e. aluminium alcoholates in which at least one alkoxy group has a primary, secondary or tertiary amino group) which comprises reacting an aluminium alcoholate with an alkanolamine, preferably by heating to temperatures up to 175 DEG  C., and removing the alcohol formed by distillation.  The aluminium alcoholate is preferably reacted with from one to three equivalents of a mono-alkanolamine, or with from 1/2 to 1 1/2 equivalents of a dialkanolamine, or with from 1/3 to 1 equivalent of a trialkanolamine.  The preferred alkanolamines are mono-, di- and tri-ethanolamines and in the examples these are reacted with various proportions of aluminium isopropylate to give products of the formul  Al(OPr)2(OC2H4NH2), Al(OPr)(OC2H4NH2)2, Al(OC2H4NH2)3, (PrO)2.Al.OC2H4.NH.C2H4O.Al (OPr)2, and <FORM:0810323/IV (b)/4> and products having recurring units of the formul  -Al(OPr).OC2H4.NH.C2H4O-, <FORM:0810323/IV (b)/5> and <FORM:0810323/IV (b)/6> (also containing some free -N-C2H4OH groups), wherein Pr represents the isopropyl radical.
Patent GB-612566-A (GB)
Title: Improvements in or relating to windows
IPC: E06B3/44
Filed: 1946-05-27
Abstract: 612,566. Windows. CRITTALL MANUFACTURING CO., Ltd., and WALKER, F. P. May 27, 1946, No. 16065. [Class 20(iii)] In a double hung sash window, the sashes 7, 8 are located at each side in grooves or recesses in a strip 4 extending continuously from top to bottom of the window opening, and the head 1 and sill 2, Fig. 2, slope upwardly and inwardly parallel to each other, so that the sashes may be assembled in the strips 4 and the strips and sashes as a unit assembled intc the outer frame. Ir the metal window shown, the sashes are positioned in grooves in the strip 4, Fig. 1, by spring- pressed balls 10, and carry brackets 70, 8C for coupling them tc the bushings of spring balances Weather strips (not shown) may be fitted in the grooves, anc resilient stops 9, Fig. 2, at top and bottom. In a modification, one of the outer flanges 14 of the strip 4 may be replaced by part of the jamb section 3. The jambs 3 may be provided with prongs or tenons which are fixed in accurately punched slots in the head and sill. Specification 320,040, [Class 20(iii)], is referred to.